/* ============================================================
   飞天经纬官网 · 设计系统 v2
   设计语言：科技 / 现代 / 品牌红 + 青色 + 藏青
   ============================================================ */

:root {
  /* 品牌色 */
  --brand-red: #EE2B47;
  --brand-red-2: #FF5A6E;
  --brand-cyan: #19C6E3;
  --brand-cyan-2: #4FE3F5;
  --navy: #0A1A33;
  --navy-2: #0E2444;
  --navy-3: #14315c;

  /* 中性色 */
  --ink: #0E1726;
  --ink-2: #2A3850;
  --muted: #6A7892;
  --line: #E7ECF3;
  --line-2: #D7E0EE;

  /* 背景 */
  --bg: #FFFFFF;
  --bg-soft: #F5F8FD;
  --bg-soft-2: #EEF3FA;

  /* 渐变 */
  --grad-brand: linear-gradient(120deg, #EE2B47 0%, #FF5A6E 100%);
  --grad-cyan: linear-gradient(120deg, #19C6E3 0%, #4FE3F5 100%);
  --grad-navy: linear-gradient(135deg, #0A1A33 0%, #0E2444 55%, #14315c 100%);
  --grad-hero: radial-gradient(120% 120% at 80% 0%, #16365f 0%, #0c2040 45%, #081629 100%);

  /* 字号 */
  --fs-display: clamp(38px, 5.4vw, 68px);
  --fs-h1: clamp(30px, 3.6vw, 46px);
  --fs-h2: clamp(26px, 2.8vw, 38px);
  --fs-h3: 22px;
  --fs-sec: 15px;

  /* 圆角 */
  --r-sm: 12px;
  --r: 18px;
  --r-lg: 26px;
  --r-xl: 34px;

  /* 阴影 */
  --sh-sm: 0 4px 16px rgba(13, 32, 64, .07);
  --sh-md: 0 14px 40px rgba(13, 32, 64, .10);
  --sh-lg: 0 26px 70px rgba(13, 32, 64, .16);
  --sh-red: 0 14px 36px rgba(238, 43, 71, .30);
  --sh-cyan: 0 14px 36px rgba(25, 198, 227, .28);

  --maxw: 1200px;
  --font: "Inter", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 50px; padding: 0 28px; border-radius: 999px;
  font-size: 15px; font-weight: 600; letter-spacing: .2px;
  cursor: pointer; border: 0; transition: all .3s var(--ease); white-space: nowrap;
  position: relative; overflow: hidden;
}
.btn-primary { background: var(--grad-brand); color: #fff; box-shadow: var(--sh-red); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 20px 46px rgba(238, 43, 71, .42); }
.btn-ghost { background: transparent; color: var(--brand-red); border: 1.5px solid var(--brand-red); }
.btn-ghost:hover { background: var(--brand-red); color: #fff; transform: translateY(-3px); }
.btn-outline-light { background: rgba(255,255,255,.06); color: #fff; border: 1.5px solid rgba(255,255,255,.45); }
.btn-outline-light:hover { background: rgba(255,255,255,.16); transform: translateY(-3px); }
.btn-light { background: #fff; color: var(--navy); box-shadow: var(--sh-md); }
.btn-light:hover { transform: translateY(-3px); box-shadow: var(--sh-lg); }

/* ---------------- 导航 ---------------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: all .35s var(--ease);
  background: #fff;
  box-shadow: 0 1px 0 rgba(13,32,64,.05);
}
.nav.scrolled {
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(13,32,64,.06), 0 10px 30px rgba(13,32,64,.06);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }

.logo { display: flex; align-items: center; gap: 12px; }
.logo img { height: 40px; width: auto; }
.logo-text {
  display: flex; flex-direction: column;
  line-height: 1.15; min-width: 76px;
}
.logo-stock-label,
.logo-stock-num {
  display: block;
  width: 100%; box-sizing: border-box;
  padding: 2px 7px;
  font-size: 10px;
  font-weight: 700;
}
.logo-stock-label {
  color: #1a1a1a;
  text-align: justify;
  text-align-last: justify;
  letter-spacing: 0.02em;
  padding-bottom: 1px;
}
.logo-stock-num {
  background: var(--brand-red);
  color: #fff;
  font-family: "Inter", sans-serif;
  font-variant-numeric: tabular-nums;
  border-radius: 3px;
  display: flex;
  justify-content: space-between;
}
.logo-stock-num i { font-style: normal; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links > li > a {
  display: inline-flex; align-items: center; height: 40px; padding: 0 16px;
  font-size: 15px; font-weight: 500; color: var(--ink-2); border-radius: 999px;
  transition: all .25s var(--ease); position: relative;
}
.nav-links > li > a:hover { color: var(--brand-red); background: var(--bg-soft-2); }
.nav-links > li > a.active { color: var(--brand-red); }
.nav-links > li > a.active::after {
  content: ""; position: absolute; left: 18px; right: 18px; bottom: 6px; height: 2px;
  background: var(--grad-brand); border-radius: 2px;
}

/* 下拉菜单 */
.dropdown { position: relative; }
.dropdown-menu {
  position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%) translateY(10px);
  min-width: 230px; background: #fff; border-radius: var(--r); padding: 12px;
  box-shadow: var(--sh-lg); border: 1px solid var(--line);
  opacity: 0; visibility: hidden; transition: all .28s var(--ease); z-index: 50;
  display: grid; gap: 2px;
}
.dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.menu-label {
  font-size: 11px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  color: #1A4377; padding: 10px 12px 4px;
}
.divider { height: 1px; background: var(--line); margin: 6px 4px; }
.dropdown-menu a {
  display: block; padding: 9px 12px; border-radius: 10px; font-size: 14.5px; color: var(--ink-2);
  transition: all .2s;
}
.dropdown-menu a:hover { background: var(--bg-soft-2); color: #E03E54; padding-left: 18px; }

/* 宽面板下拉（图标 + 名称 + 描述） */
.dropdown-menu.mega { min-width: 660px; grid-template-columns: 1fr auto 1fr; gap: 0; padding: 16px 18px; align-items: stretch; }
.dropdown-menu.mega.ai { min-width: 380px; grid-template-columns: 1fr; }
.dropdown-menu.mega.cols-6 { min-width: 760px; grid-template-columns: repeat(3, 1fr); }
.dropdown-menu.mega.cols-6 .mega-col.text { padding: 6px 12px; }
.dropdown-menu.mega.cols-6 .mega-label { padding: 8px 12px 6px; font-size: 12px; }
.dropdown-menu.mega.cols-6 .mega-col.text:nth-child(-n+3) { border-bottom: 1px solid var(--line); padding-bottom: 10px; }
.dropdown-menu.mega.cols-6 .mega-col.text:nth-child(n+4) { padding-top: 10px; }
/* 修复：三列布局下每行最右列（含质量强国红榜）不应有右分隔线，否则像多出的边框 */
.dropdown-menu.mega.cols-6 .mega-col.text:nth-child(3n) { border-right: none; }

/* 质量强国红榜独立页 */
.hb-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:8px 0 30px}
.hb-stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 16px;text-align:center;box-shadow:var(--sh-sm)}
.hb-stat b{display:block;font-size:30px;font-weight:800;color:var(--brand-red);line-height:1.1;margin-bottom:6px}
.hb-stat span{font-size:13px;color:var(--muted)}
.hb-svc{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:18px}
.bp-more{display:inline-block;margin-top:10px;color:var(--brand-red);font-weight:700;font-size:14px;text-decoration:none}
.bp-more:hover{text-decoration:underline}
@media(max-width:760px){.hb-stats{grid-template-columns:repeat(2,1fr)}.hb-svc{grid-template-columns:1fr}}
.dropdown-menu.mega.cols-2 { min-width: 560px; grid-template-columns: repeat(2, 1fr); }
.dropdown-menu.mega.cols-2 .mega-col { padding: 0 10px; }
.dropdown-menu.mega.cols-2 .mega-col:not(:last-child) { border-right: 1px solid var(--line); }
/* 主营业务：上下两排（数字营销 / 电商生态运营），每排下方图标网格 */
.dropdown-menu.mega.cols-stack { grid-template-columns: 1fr; min-width: 780px; padding: 18px 20px; gap: 16px; align-content: start; }
.dropdown-menu.mega.cols-stack .mega-row { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.dropdown-menu.mega.cols-stack .mega-row + .mega-row { border-top: 1px solid var(--line); padding-top: 16px; }
.dropdown-menu.mega.cols-stack .mega-row-head .mega-label { padding: 0; font-size: 13px; letter-spacing: 1px; color: #E03E54; }
.dropdown-menu.mega.cols-stack .mega-row-head .mega-label::after { content: "\203A"; margin-left: 6px; font-weight: 700; font-size: 15px; }
.dropdown-menu.mega.cols-stack .mega-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px 12px; }
.dropdown-menu.mega.cols-stack .mega-grid.single { grid-template-columns: repeat(2, 1fr); gap: 8px 10px; }
.dropdown-menu.mega.cols-stack .mega-grid .mega-item { display: flex; align-items: center; gap: 11px; padding: 9px 12px; border-radius: 10px; flex: 1 1 118px; min-width: 0; background: transparent; transition: background .2s, padding .2s; }
.dropdown-menu.mega.cols-stack .mega-grid .mega-item:hover { background: var(--bg-soft-2); padding-left: 12px; }
.dropdown-menu.mega.cols-stack .mega-grid .mega-item:hover .mi-txt b { color: #E03E54; }
.dropdown-menu.mega.cols-stack .mi-ic { width: 26px; height: 26px; background: rgba(26,67,119,.10) !important; color: #1A4377 !important; box-shadow: inset 0 0 0 1px rgba(26,67,119,.16); }
.dropdown-menu.mega.cols-stack .mi-ic svg { width: 15px; height: 15px; }
.dropdown-menu.mega.cols-stack.ai-min { min-width: 520px; }
.dropdown-menu.mega.cols-stack .mega-grid .mega-item:hover .mi-ic { background: linear-gradient(135deg,#E03E54,#FF5A6E) !important; color: #fff !important; box-shadow: 0 4px 12px rgba(224,62,84,.35); }
.dropdown-menu.mega.list { min-width: 220px; grid-template-columns: 1fr; padding: 12px; gap: 2px; }
.dropdown-menu.mega.list a { display: flex; align-items: center; padding: 9px 12px; border-radius: 10px; font-size: 14.5px; color: var(--ink-2); }
.dropdown-menu.mega.list a:hover { background: var(--bg-soft-2); color: #E03E54; }
.nav-dot {
  width: 22px; height: 22px; border-radius: 5px; flex-shrink: 0;
  background: linear-gradient(135deg, #FF5A6E, #E03E54);
  box-shadow: 0 2px 6px rgba(224,62,84,.35), inset 0 1px 0 rgba(255,255,255,.18);
  margin-right: 10px;
  display: inline-flex; align-items: center; justify-content: center;
}
.nav-dot svg { display: block; }
.mega-col { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.mega-col.text { padding: 0 10px; }
.mega-col.text:not(:last-child) { border-right: 1px solid var(--line); }
.mega-label {
  font-size: 12px; font-weight: 700; letter-spacing: 1px;
  color: #1A4377; padding: 10px 12px 8px;
  display: flex; align-items: center;
  text-decoration: none;
}
a.mega-label:hover { color: #E03E54; }
.mega-col.text a.mega-label { color: #1A4377; }
.mega-divider { width: 1px; background: var(--line); margin: 10px 14px; align-self: stretch; }
.mega-col a { display: flex; align-items: center; gap: 11px; padding: 8px 12px; border-radius: 10px; font-size: 0; }
.mega-col a:hover { background: var(--bg-soft-2); padding-left: 12px; color: inherit; }
.mega-col.text a { display: block; padding: 8px 12px; border-radius: 8px; font-size: 14px; color: var(--ink-2); }
.mega-col.text a:hover { background: var(--bg-soft-2); color: #E03E54; padding-left: 18px; }
.mi-ic {
  width: 34px; height: 34px; flex: none; border-radius: 9px; background: var(--bg-soft-2);
  color: var(--brand-red); display: flex; align-items: center; justify-content: center; transition: all .25s;
}
.mega-col a:hover .mi-ic { background: linear-gradient(135deg,#E03E54,#FF5A6E); color: #fff; box-shadow: 0 4px 12px rgba(224,62,84,.35); }
.mi-txt { display: flex; flex-direction: column; line-height: 1.3; min-width: 0; }
.mi-txt b { font-size: 14px; font-weight: 600; color: var(--ink-2); white-space: nowrap; transition: color .2s; }
.mi-txt small { font-size: 11.5px; color: var(--muted); white-space: nowrap; }
.mega-col a:hover .mi-txt b { color: #E03E54; }
.mega-tip {
  margin-top: 10px; padding: 13px 14px; font-size: 12.5px; line-height: 1.8; color: var(--muted);
  background: var(--bg-soft); border-radius: 12px; border: 1px dashed var(--line-2);
}

.nav-cta { display: none; }
.nav-cta .btn { height: 44px; padding: 0 22px; font-size: 14px; }

/* 移动端汉堡按钮 */
.menu-btn { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 42px; height: 42px; margin-left: 8px; background: rgba(13,32,64,.04); border: 1px solid rgba(13,32,64,.08); border-radius: 10px; cursor: pointer; }
.menu-btn span { display: block; width: 20px; height: 2px; margin: 0 auto; background: var(--ink-2); border-radius: 2px; transition: all .3s var(--ease); }
.menu-btn.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn.active span:nth-child(2) { opacity: 0; }
.menu-btn.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端菜单面板 */
.mobile-menu { position: fixed; top: 76px; right: 0; width: 78%; max-width: 320px; height: calc(100vh - 76px); background: #fff; box-shadow: -12px 0 40px rgba(13,32,64,.16); transform: translateX(110%); transition: transform .35s var(--ease); z-index: 99; display: flex; flex-direction: column; padding: 18px 16px; gap: 4px; overflow-y: auto; }
.mobile-menu.open { transform: translateX(0); }
.mobile-menu a { display: flex; align-items: center; padding: 15px 16px; font-size: 16px; font-weight: 600; color: var(--ink-2); border-radius: 12px; text-decoration: none; transition: all .2s var(--ease); }
.mobile-menu a:hover, .mobile-menu a.active { background: var(--bg-soft-2); color: var(--brand-red); }
.mobile-mask { position: fixed; inset: 76px 0 0 0; background: rgba(8,18,38,.4); opacity: 0; visibility: hidden; transition: all .35s var(--ease); z-index: 98; }
.mobile-mask.open { opacity: 1; visibility: visible; }

/* ---------------- 区块通用 ---------------- */
section { position: relative; }
.bg-navy { background: var(--grad-navy); color: #fff; overflow: hidden; }
.bg-navy::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(circle at 18% 20%, rgba(25,198,227,.18), transparent 45%),
                    radial-gradient(circle at 85% 80%, rgba(238,43,71,.14), transparent 45%);
  pointer-events: none;
}
.bg-gray { background: var(--bg-soft); }

.sec-head { text-align: center; max-width: 760px; margin: 0 auto 56px; position: relative; }
.sec-tag {
  display: inline-block; font-size: 14px; font-weight: 700; letter-spacing: 2px;
  color: #fff; text-transform: uppercase; margin-bottom: 14px;
  position: relative;
  background: linear-gradient(135deg, #FF5A6E, #E03E54);
  padding: 6px 14px; border-radius: 6px;
  box-shadow: 0 4px 14px rgba(224,62,84,.32);
}
.sec-head h2 { font-size: var(--fs-h2); font-weight: 700; letter-spacing: -.5px; color: var(--navy); line-height: 1.25; }
.bg-navy .sec-head h2 { color: #fff; }
.sec-head p { margin-top: 16px; color: var(--muted); font-size: 16px; }

/* 区块上下留白 */
section:not(.hero-carousel) { padding: 100px 0; }
.bg-navy section, .bg-navy > .container { position: relative; z-index: 1; }

/* ---------------- 页面头 ---------------- */
.page-header {
  position: relative; padding: 150px 0 90px; overflow: hidden;
  background: var(--grad-hero); color: #fff;
}
.page-header::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 46px 46px; mask-image: radial-gradient(80% 80% at 70% 30%, #000, transparent 70%);
}
.page-header::after {
  content: ""; position: absolute; right: -120px; top: -120px; width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(25,198,227,.35), transparent 65%); filter: blur(10px);
}
.page-header .container { position: relative; z-index: 1; }
.eyebrow {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 3px;
  color: var(--brand-cyan-2); padding: 6px 14px; border: 1px solid rgba(25,198,227,.4);
  border-radius: 999px; margin-bottom: 22px;
}
.page-header h1 {
  font-size: var(--fs-display); font-weight: 800; line-height: 1.1; letter-spacing: -1px;
  background: linear-gradient(120deg, #fff 30%, #9fe8f6 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.page-header p { margin-top: 22px; max-width: 640px; font-size: 17px; color: rgba(255,255,255,.74); line-height: 1.8; }

/* ---------------- 首页轮播 ---------------- */
.hero-carousel {
  position: relative; min-height: 100vh; background: var(--grad-hero); color: #fff;
  display: flex; align-items: center; overflow: hidden; padding: 120px 0 80px;
}
.hero-carousel .container { position: relative; z-index: 2; width: 100%; }
.hero-carousel::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 54px 54px; mask-image: radial-gradient(75% 75% at 60% 40%, #000, transparent 75%);
}
.hero-carousel::after {
  content: ""; position: absolute; width: 680px; height: 680px; right: -180px; top: -200px;
  background: radial-gradient(circle, rgba(25,198,227,.30), transparent 62%); filter: blur(6px);
  animation: floatY 14s ease-in-out infinite;
}
.carousel-track { display: flex; width: 200%; transition: transform .9s var(--ease); position: relative; z-index: 2; }
.carousel-slide { width: 50%; min-height: 100vh; display: flex; align-items: center; padding: 120px 0 80px; }

.hero-ai-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 50px; align-items: center; width: 100%; }
.hero-carousel .eyebrow { color: var(--brand-cyan-2); border-color: rgba(25,198,227,.4); }
.hero-carousel h1 { font-size: var(--fs-display); font-weight: 800; line-height: 1.08; letter-spacing: -1.5px; }
.hero-carousel h1 .accent {
  background: linear-gradient(120deg, var(--brand-red-2), var(--brand-cyan-2));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-carousel .lead { margin: 26px 0 36px; font-size: 17.5px; color: rgba(255,255,255,.78); max-width: 520px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero 左右分栏：左侧文字 + 右侧球体 */
.hero-anim { position: relative; }
.hero-split { display: flex; align-items: center; padding: 140px 0 100px; }
.hero-split::before, .hero-split::after { display: none; }
.hero-split .container { position: relative; z-index: 2; width: 100%; }
.hero-split-wrap { display: grid; grid-template-columns: 1.65fr .35fr; gap: 24px; align-items: center; }
.hero-left { text-align: left; }
.hero-left .eyebrow { color: var(--brand-cyan-2); border-color: rgba(25,198,227,.4); }
.hero-right { position: relative; display: flex; align-items: center; justify-content: flex-end; }\n.hero-right .hero-globe { margin-right: -110px; }

/* 炫酷大字 */
.hero-mega {
  font-size: clamp(40px, 4.6vw, 60px); font-weight: 900; line-height: 1.12; letter-spacing: -1.5px;
  color: #fff; white-space: nowrap;
  text-shadow: 0 0 40px rgba(25,198,227,.35), 0 0 90px rgba(25,198,227,.18), 0 0 160px rgba(25,198,227,.08);
  animation: megaPulse 4s ease-in-out infinite;
}
.hero-gradient-text {
  background: linear-gradient(120deg, #fff 20%, #4FE3F5 55%, #FF5A6E 90%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  text-shadow: none;
  filter: drop-shadow(0 0 30px rgba(25,198,227,.28));
}
.hero-gradient-text span { color: var(--brand-cyan-2); -webkit-text-fill-color: var(--brand-cyan-2); }
.hero-mega .hl-blue { background: linear-gradient(180deg, #ffffff 0%, #ffffff 50%, #4FE3F5 82%, #19C6E3 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; text-shadow: none; filter: drop-shadow(0 0 18px rgba(79,227,245,.3)); }
.hero-mega .hl-grad { background: linear-gradient(180deg, #ffffff 0%, #ffffff 45%, #c5d9f4 70%, #1A4377 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; text-shadow: none; filter: drop-shadow(0 0 16px rgba(26,67,119,.4)); }
.hero-mega .hl-light { color: rgba(79,227,245,.32); -webkit-text-fill-color: rgba(79,227,245,.32); background: none; -webkit-background-clip: border-box; background-clip: border-box; text-shadow: 0 0 24px rgba(79,227,245,.38), 0 0 60px rgba(79,227,245,.20); filter: none; font-weight: 900; letter-spacing: .04em; font-size: clamp(40px, 5vw, 72px); }
.hero-tagline { margin-top: 18px; font-size: clamp(16px, 1.9vw, 23px); font-weight: 700; letter-spacing: .08em; color: rgba(255,255,255,.85); text-shadow: 0 0 18px rgba(25,198,227,.22); }
.hero-sub { margin-top: 22px; font-size: clamp(15px, 1.6vw, 20px); color: rgba(255,255,255,.74); max-width: 560px; line-height: 1.75; }

/* 6 大板块入口胶囊（两排 × 3，与"产业生态服务商"同宽，等宽扁胶囊） */
.hero-keywords { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 20px; max-width: 470px; }
.kw {
  width: 100%; min-width: 0; display: flex; align-items: center; justify-content: center;
  padding: 4px 12px; border-radius: 14px;
  font-size: 12px; font-weight: 700; letter-spacing: .3px;
  color: #4FE3F5;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  background: transparent;
  border: 1.5px solid rgba(79,227,245,.65);
  box-shadow: 0 4px 14px rgba(79,227,245,.22), inset 0 0 12px rgba(79,227,245,.08);
  animation: kwIn .6s cubic-bezier(.2,.7,.2,1) both;
  transition: .25s ease;
}
.kw-t {
  color: #4FE3F5;
  text-shadow: 0 0 10px rgba(79,227,245,.55);
}
.kw-red   { animation-delay: .1s; }
.kw-cyan  { animation-delay: .2s; }
.kw-white { animation-delay: .3s; }
.kw::before { display: none; }
.kw:hover { transform: translateY(-3px); border-color: rgba(79,227,245,.95); background: rgba(79,227,245,.14); box-shadow: 0 10px 28px rgba(79,227,245,.38), 0 0 22px rgba(79,227,245,.32), inset 0 0 16px rgba(79,227,245,.12); color: #7DEAF7; text-shadow: 0 0 12px rgba(79,227,245,.8); }
@keyframes kwIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

/* hero 右下角设计点缀大字 */
.hero-corner-text {
  position: absolute; right: 5%; bottom: 14%; z-index: 1;
  text-align: left; line-height: 1.0; pointer-events: none;
  width: max-content;
  display: flex; flex-direction: column; align-items: flex-start; gap: 0;
  animation: cornerIn 1s ease both .5s;
}
.hero-corner-text .ct-line {
  display: flex; justify-content: space-between; width: 100%;
  font-weight: 900; letter-spacing: .04em;
  font-size: clamp(62px, 8.1vw, 116px);
  white-space: nowrap;
  color: rgba(79,227,245,.12);
  text-shadow: 0 0 20px rgba(79,227,245,.10);
}
.hero-corner-text .ct-line > span { display: inline-block; }
@keyframes cornerIn { from { opacity: 0; transform: translateX(26px); } to { opacity: 1; transform: translateX(0); } }
@media (max-width: 768px) {
  .hero-corner-text { right: 4%; bottom: 3%; }
  .hero-corner-text .ct-line { font-size: clamp(30px, 9vw, 46px); }
}

/* 科技球体 */
.hero-globe {
  width: 100%; max-width: 900px; min-width: 640px;
  filter: drop-shadow(0 0 80px rgba(25,198,227,.34)) saturate(1.18) brightness(1.12);
  animation: globeFloat 9s ease-in-out infinite;
  overflow: visible;
  -webkit-mask-image: radial-gradient(54% 58% at 45% 46%, #000 0%, #000 56%, rgba(0,0,0,.5) 74%, transparent 90%);
          mask-image: radial-gradient(54% 58% at 45% 46%, #000 0%, #000 56%, rgba(0,0,0,.5) 74%, transparent 90%);
}
.globe-spin { transform-origin: 300px 300px; animation: globeRotate 80s linear infinite; }
.hero-globe .gnode { animation: pointGlow 2.8s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.hero-globe .globe-flow circle { filter: drop-shadow(0 0 5px rgba(79,227,245,.9)); }

@keyframes particleTwinkle {
  0%, 100% { opacity: .35; transform: scale(.85); }
  50% { opacity: 1; transform: scale(1.15); }
}

@keyframes globeFloat {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}
@keyframes globeRotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
@keyframes megaPulse {
  0%,100% { filter: drop-shadow(0 0 30px rgba(25,198,227,.25)); }
  50% { filter: drop-shadow(0 0 55px rgba(25,198,227,.45)); }
}

/* AI 服务页 — 知识产权证书墙 */
/* 知识产权证书三卡墙（发明专利 / 国家行业标准 / 软件著作权） */
.cert-grid.cert-ip {
  grid-template-columns: repeat(3, 1fr);
  max-width: 960px; margin: 50px auto 0;
}
.cert-ip .cert-card figure {
  height: 230px; padding: 16px;
  background: linear-gradient(135deg, #f8fafc 0%, #eef2f7 100%);
}
.cert-ip .cert-card figure img { max-width: 100%; max-height: 200px; width: auto; height: auto; object-fit: contain; }
.cert-ip .cert-card:hover { border-color: rgba(79,227,245,.55); box-shadow: 0 16px 48px rgba(0,0,0,.28); }
@media (max-width: 768px) {
  .cert-grid.cert-ip { grid-template-columns: 1fr; max-width: 100%; }
  .cert-ip .cert-card figure { height: 200px; }
  .cert-ip .cert-card figure img { max-height: 170px; }
}

/* ===== 空间感科技背景（v2 更炫酷） ===== */
.hero-space-bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }

/* 深空底色 */
.bg-deep { position: absolute; inset: 0; background: radial-gradient(120% 120% at 50% 0%, #0d2b52 0%, #0a1e3d 38%, #060f22 100%); }
.bg-deep::after {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 70% 28%, rgba(25,198,227,.20), transparent 38%),
    radial-gradient(circle at 22% 72%, rgba(238,43,71,.14), transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(79,227,245,.05), transparent 60%);
}

/* 星云光晕 */
.bg-nebula {
  position: absolute; inset: -10%;
  background:
    radial-gradient(circle at 72% 32%, rgba(25,198,227,.30), transparent 42%),
    radial-gradient(circle at 24% 74%, rgba(238,43,71,.18), transparent 40%),
    radial-gradient(circle at 48% 48%, rgba(79,227,245,.10), transparent 50%);
  filter: blur(36px);
  animation: nebulaDrift 18s ease-in-out infinite;
}

/* 双层星空（视差滚动，模拟穿越） */
.bg-stars {
  position: absolute; inset: -20% 0;
  background-image:
    radial-gradient(circle, rgba(255,255,255,.9) 1.2px, transparent 1.2px),
    radial-gradient(circle, rgba(79,227,245,.8) 1.6px, transparent 1.6px),
    radial-gradient(circle, rgba(255,255,255,.5) 1px, transparent 1px),
    radial-gradient(circle, rgba(255,255,255,.3) .8px, transparent .8px);
  background-size: 180px 180px, 320px 320px, 130px 130px, 80px 80px;
  background-position: 0 0, 60px 40px, 20px 90px, 10px 20px;
  opacity: .9;
  animation: starsFlow 46s linear infinite;
}
.bg-stars.s2 {
  background-size: 260px 260px, 420px 420px, 200px 200px, 120px 120px;
  background-position: 90px 30px, 150px 120px, 50px 60px, 30px 90px;
  opacity: .55;
  animation-duration: 70s;
  animation-direction: reverse;
}

/* 全屏外星空连接网络（主视觉） */
.bg-network {
  position: absolute; inset: 0; width: 100%; height: 100%;
  pointer-events: none;
  opacity: .72;
  filter: drop-shadow(0 0 30px rgba(25,198,227,.12));
  animation: netFloat 16s ease-in-out infinite;
}
.bg-network .net-lines line { stroke-dasharray: 320; stroke-dashoffset: 320; animation: netDraw 8s ease-in-out infinite alternate; }
.bg-network .net-lines line:nth-child(2n) { animation-delay: -1.5s; animation-duration: 9s; }
.bg-network .net-lines line:nth-child(3n) { animation-delay: -3s; animation-duration: 11s; }
.bg-network .net-lines line:nth-child(4n) { animation-delay: -4.5s; animation-duration: 10s; }
.bg-network .net-arcs { transform-origin: 960px 600px; animation: arcDrift 60s linear infinite; }
.bg-network .net-arcs ellipse { vector-effect: non-scaling-stroke; }
.bg-network .net-nodes .nd { transform-box: fill-box; transform-origin: center; animation: nodeTwinkle 3.2s ease-in-out infinite; }
.bg-network .net-nodes .nd:nth-child(2n) { animation-delay: .6s; }
.bg-network .net-nodes .nd:nth-child(3n) { animation-delay: 1.2s; }
.bg-network .net-nodes .nd:nth-child(4n) { animation-delay: 1.8s; }
.bg-network .net-nodes .nd:nth-child(5n) { animation-delay: 2.4s; }
.bg-network .net-flow circle { filter: drop-shadow(0 0 6px rgba(255,255,255,.9)); }
.bg-network .net-arcflow circle { filter: drop-shadow(0 0 6px rgba(255,255,255,.85)); }


/* 飞天光束（自下而上发射） */
.bg-rays {
  position: absolute; left: 50%; bottom: 0; width: 1400px; height: 120%;
  transform: translateX(-50%);
  background:
    repeating-linear-gradient(90deg,
      rgba(25,198,227,0) 0 70px,
      rgba(25,198,227,.05) 70px 90px,
      rgba(25,198,227,0) 90px 170px),
    repeating-linear-gradient(0deg,
      rgba(25,198,227,0) 0 60px,
      rgba(25,198,245,.04) 60px 90px,
      rgba(25,198,227,0) 90px 160px);
  mask-image: linear-gradient(to top, rgba(0,0,0,.7), transparent 75%);
  animation: raysPulse 7s ease-in-out infinite;
  pointer-events: none;
}

/* 飞升粒子流（飞天感） */
.bg-ascend {
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 18% 90%, rgba(79,227,245,.85) 0 1.5px, transparent 2.5px),
    radial-gradient(circle at 38% 80%, rgba(255,255,255,.8) 0 1.2px, transparent 2.2px),
    radial-gradient(circle at 62% 92%, rgba(255,90,110,.8) 0 1.5px, transparent 2.5px),
    radial-gradient(circle at 82% 84%, rgba(79,227,245,.85) 0 1.2px, transparent 2.2px),
    radial-gradient(circle at 30% 70%, rgba(79,227,245,.7) 0 1.2px, transparent 2.2px),
    radial-gradient(circle at 70% 74%, rgba(255,255,255,.7) 0 1.5px, transparent 2.5px),
    radial-gradient(circle at 50% 96%, rgba(255,90,110,.8) 0 1.4px, transparent 2.4px);
  background-size: 100% 100%;
  animation: ascendFlow 9s linear infinite;
  pointer-events: none;
}

@keyframes nebulaDrift {
  0%,100% { transform: translate(0,0) scale(1); }
  50% { transform: translate(-24px, 18px) scale(1.05); }
}
@keyframes starsFlow {
  0% { transform: translateY(0); }
  100% { transform: translateY(140px); }
}
@keyframes netFloat {
  0%,100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}
@keyframes netDraw {
  0% { stroke-dashoffset: 320; opacity: .25; }
  100% { stroke-dashoffset: 0; opacity: .85; }
}
@keyframes arcDrift {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
@keyframes nodeTwinkle {
  0%,100% { opacity: .45; transform: scale(.9); }
  50% { opacity: 1; transform: scale(1.25); }
}
@keyframes meshGlow {
  0%,100% { opacity: .35; }
  50% { opacity: .85; }
}
@keyframes hllineDraw {
  0% { stroke-dashoffset: 160; opacity: .2; }
  100% { stroke-dashoffset: 0; opacity: .75; }
}
@keyframes raysPulse {
  0%,100% { opacity: .45; }
  50% { opacity: .95; }
}
@keyframes planetPulse {
  0%,100% { transform: translateY(-50%) scale(1); }
  50% { transform: translateY(calc(-50% - 10px)) scale(1.02); }
}
@keyframes pointGlow {
  0%,100% { opacity: .35; }
  50% { opacity: .95; }
}
@keyframes starTwinkle {
  0%,100% { opacity: .35; }
  50% { opacity: 1; }
}
@keyframes constDraw {
  0% { stroke-dashoffset: 220; opacity: .2; }
  100% { stroke-dashoffset: 0; opacity: .8; }
}
@keyframes curveGlow {
  0%,100% { opacity: .85; }
  50% { opacity: 1; }
}
@keyframes curveDrift {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
@keyframes ascendFlow {
  0% { transform: translateY(60px) scale(.96); opacity: .3; }
  25% { opacity: .85; }
  60% { transform: translateY(-260px) scale(1); opacity: .45; }
  100% { transform: translateY(-520px) scale(1.02); opacity: 0; }
}

@media (max-width: 900px) {
  .hero-stage { min-height: 340px; }
  .hero-mega { font-size: clamp(44px, 11vw, 72px); letter-spacing: -2px; }
  .hero-sub { font-size: 15px; max-width: 90%; }
  .stack-line { font-size: clamp(22px, 6vw, 34px); }
  .bg-network { opacity: .55; }
  .hero-split-wrap { grid-template-columns: 1fr; text-align: center; gap: 60px; }
  .hero-left { text-align: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-right { justify-content: center; }
  .hero-globe { min-width: auto; max-width: 560px; width: 92vw; }
  .hero-btns { justify-content: center; }
  .hero-btns { justify-content: center; }
}

/* AI 视觉 */
.hero-ai-visual { position: relative; height: 420px; display: flex; align-items: center; justify-content: center; }
.ai-orbit {
  position: absolute; width: 360px; height: 360px; border-radius: 50%;
  border: 1px solid rgba(25,198,227,.28);
  box-shadow: 0 0 60px rgba(25,198,227,.18) inset;
  animation: spin 22s linear infinite;
}
.ai-orbit::before {
  content: ""; position: absolute; inset: 38px; border-radius: 50%;
  border: 1px dashed rgba(255,255,255,.14);
}
.ai-orbit-2 { width: 250px; height: 250px; animation: spin 16s linear infinite reverse; border-color: rgba(238,43,71,.26); }
.ai-orbit-2::before { display: none; }
.ai-spark {
  position: absolute; width: 7px; height: 7px; border-radius: 50%; background: #fff;
  box-shadow: 0 0 14px rgba(255,255,255,.9); animation: twinkle 2.6s ease-in-out infinite;
}
@keyframes twinkle { 0%,100% { opacity: .2; transform: scale(.7); } 50% { opacity: 1; transform: scale(1.2); } }
.ai-core {
  width: 130px; height: 130px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 40px; font-weight: 800; letter-spacing: 1px; color: #fff;
  background: radial-gradient(circle at 35% 30%, #ff6b7e, #EE2B47 60%, #b5122c);
  box-shadow: 0 0 50px rgba(238,43,71,.6), 0 0 0 10px rgba(238,43,71,.12);
  animation: pulse 3.4s ease-in-out infinite;
  position: relative; z-index: 3;
}
.ai-node {
  position: absolute; width: 14px; height: 14px; border-radius: 50%;
  background: var(--grad-cyan); box-shadow: 0 0 18px rgba(25,198,227,.8);
  animation: blink 3s ease-in-out infinite;
}
.ai-node::after {
  content: ""; position: absolute; inset: -7px; border-radius: 50%;
  border: 1px solid rgba(25,198,227,.5); animation: ring 3s ease-out infinite;
}
/* 新闻幻灯片视觉 */
.news-highlight {
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.16);
  border-radius: var(--r-lg); padding: 38px; backdrop-filter: blur(10px);
  box-shadow: var(--sh-lg); max-width: 420px; position: relative; overflow: hidden;
}
.news-highlight::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--grad-brand);
}
.news-highlight .date { font-size: 13px; color: var(--brand-cyan-2); font-weight: 600; letter-spacing: 1px; }
.news-highlight h2 { font-size: 26px; margin: 10px 0 14px; color: #fff; }
.news-highlight p { color: rgba(255,255,255,.78); font-size: 15.5px; margin-bottom: 22px; }

.carousel-dots { position: absolute; bottom: 38px; left: 50%; transform: translateX(-50%); display: flex; gap: 12px; z-index: 5; }
.carousel-dot { width: 11px; height: 11px; border-radius: 50%; background: rgba(255,255,255,.3); cursor: pointer; transition: all .3s; }
.carousel-dot.active { width: 34px; border-radius: 999px; background: var(--grad-brand); }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.06); } }
@keyframes blink { 0%,100% { opacity: .45; } 50% { opacity: 1; } }
@keyframes ring { 0% { transform: scale(.6); opacity: .8; } 100% { transform: scale(1.6); opacity: 0; } }
@keyframes floatY { 0%,100% { transform: translateY(0); } 50% { transform: translateY(40px); } }

/* ---------------- 产品展示（首页 / 服务页） ---------------- */
.pc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
/* 六大业务板块网格（按商业计划书 2026 重组） */
.bp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.bp-card {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: 18px;
  padding: 30px 28px 26px; transition: .3s; display: flex; flex-direction: column;
  box-shadow: 0 6px 24px rgba(15,44,92,.05);
}
.bp-card:hover { transform: translateY(-6px); box-shadow: 0 18px 48px rgba(238,43,71,.12); border-color: rgba(238,43,71,.35); }
.bp-num {
  position: absolute; top: 18px; right: 22px; font-size: 36px; font-weight: 800;
  font-family: "Inter", sans-serif; line-height: 1; letter-spacing: -1px;
  color: transparent; -webkit-text-stroke: 1.5px rgba(238,43,71,.22);
  pointer-events: none;
}
.bp-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.bp-icon {
  width: 46px; height: 46px; border-radius: 12px; display: inline-flex;
  align-items: center; justify-content: center; flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(0,0,0,.10);
}
.bp-head h3 { font-size: 18px; color: var(--navy); margin: 0; font-weight: 800; line-height: 1.3; }
.bp-head h3 small { display: inline-block; margin-left: 4px; font-size: 12px; color: var(--muted); font-weight: 500; }
.brand-red { color: var(--brand-red) !important; }
.bp-sum { color: #4a5874; font-size: 14.5px; line-height: 1.7; margin-bottom: 16px; min-height: 48px; }
.bp-list { list-style: none; padding: 14px 0 0; margin: 0; border-top: 1px dashed var(--line); display: flex; flex-wrap: wrap; gap: 6px 8px; }
.bp-list li {
  font-size: 12.5px; color: var(--ink-2); padding: 4px 11px; border-radius: 999px;
  background: rgba(238,43,71,.06); border: 1px solid rgba(238,43,71,.14);
}
.bp-list li:hover { background: rgba(238,43,71,.12); color: var(--brand-red); }
.bp-list li a { color: inherit; text-decoration: none; }
.bp-list li a:hover { color: var(--brand-red); }

.bp-table { background: #fff; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; box-shadow: 0 6px 24px rgba(15,44,92,.05); }

/* 五大广告资源位板块（数字营销落地页，参考腾讯广告生态图） */
.ad-block { padding: 90px 0; position: relative; }
.ad-block:nth-child(even) { background: linear-gradient(180deg, #F4F8FD 0%, #E8EFF9 100%); }
.ad-block .container { max-width: 1180px; }
.ad-block-inner { display: grid; grid-template-columns: 1.05fr 1fr; gap: 72px; align-items: center; }
.ad-block:nth-child(even) .ad-block-inner { grid-template-columns: 1fr 1.05fr; }
/* 奇偶交替：偶数板块把视觉放右侧 */
.ad-block:nth-child(even) .ad-block-text { order: 1; }
.ad-block:nth-child(even) .ad-block-visual { order: 2; }

.ad-block-text { padding: 12px 0; }
.ad-block-title { font-size: 38px; font-weight: 800; color: var(--navy); margin: 0 0 22px; line-height: 1.15; letter-spacing: -0.5px; padding-left: 18px; border-left: 4px solid var(--brand-c, #E03E54); }
.ad-block-desc { font-size: 15.5px; line-height: 1.95; color: #4a5874; margin: 0; }

/* 板块导航条（services 页面顶部） */
.bp-nav-strip { padding: 20px 0 0; background: #ffffff; border-bottom: 1px solid #e5edf6; }
.bp-nav-inner { display: flex; flex-wrap: wrap; gap: 8px 14px; justify-content: center; align-items: center; }
.bp-nav-inner a { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: 999px; background: #f4f8fd; color: #1a3d6b; font-size: 13px; font-weight: 700; text-decoration: none; transition: .2s ease; border: 1px solid #e5edf6; }
.bp-nav-inner a:hover { background: #e8eff9; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,.08); }
.bp-nav-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

/* 板块大图标视觉区（services 主页 6 板块） */
.ad-center-icon { position: relative; width: 240px; height: 240px; display: flex; align-items: center; justify-content: center; margin: 0 auto; }
.ad-icon-glow { position: absolute; inset: 0; border-radius: 50%; background: radial-gradient(circle, currentColor 0%, transparent 65%); opacity: 0.18; transform: scale(1.15); }
.ad-icon-illo { position: relative; z-index: 2; width: 170px; height: 170px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #ffffff 0%, #f4f8fd 100%); border: 1.5px solid currentColor; box-shadow: 0 18px 50px -10px currentColor, inset 0 0 0 6px #ffffff; }

/* 板块上方小标签 + 链接 chip */
.ad-block-tag { display: inline-block; padding: 4px 12px; border-radius: 999px; background: color-mix(in srgb, var(--brand-c, #E03E54) 12%, transparent); color: var(--brand-c, #E03E54); font-size: 12px; font-weight: 800; letter-spacing: 1px; margin-bottom: 14px; }
.ad-block-chips { list-style: none; margin: 22px 0 26px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 10px; }
.ad-block-chips li { padding: 7px 14px; border-radius: 8px; background: #f4f8fd; color: #1a3d6b; font-size: 13px; font-weight: 700; border: 1px solid #e5edf6; }
.ad-block-chips li a { color: #1a3d6b; text-decoration: none; }
.ad-block-chips li a:hover { color: var(--brand-c, #E03E54); }
.ad-block-more { display: inline-flex; align-items: center; gap: 6px; color: var(--brand-c, #E03E54); font-weight: 800; font-size: 14px; text-decoration: none; transition: .2s; }
.ad-block-more:hover { gap: 12px; }
.ad-block-small { font-size: 16px; color: #94a3b8; font-weight: 600; margin-left: 6px; }

/* ============ 主营业务页卡片网格（参考截图样式）============ */
.svc-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin: 8px 0 30px;
}
/* 两卡平铺变体：铺满整行 */
.svc-card-grid--two { grid-template-columns: repeat(2, 1fr); }
/* 单卡 showcase 容器：宽幅水平卡片，与上方多卡网格形成对比 */
.svc-card-grid--featured {
  display: block;
  margin: 8px auto 36px;
  max-width: 920px;
}
.svc-card--featured {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
  padding: 32px 40px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.0) 0%, rgba(255,255,255,.0) 55%, color-mix(in srgb, var(--brand-c, #E03E54) 8%, #fff) 100%),
    #ffffff;
  border: 1px solid #e5edf6;
  border-radius: 22px;
  box-shadow: 0 14px 40px -14px rgba(20, 50, 90, 0.14), 0 2px 6px -2px rgba(20, 50, 90, 0.06);
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
  transition: transform .3s var(--ease, ease), box-shadow .3s var(--ease, ease), border-color .3s var(--ease, ease);
}
.svc-card--featured::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--brand-c, #E03E54), color-mix(in srgb, var(--brand-c, #E03E54) 55%, #ffffff));
}
.svc-card--featured:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--brand-c, #E03E54) 28%, #e5edf6);
  box-shadow: 0 22px 54px -14px color-mix(in srgb, var(--brand-c, #E03E54) 22%, rgba(20,50,90,.12)), 0 4px 10px -2px rgba(20, 50, 90, 0.08);
}
.svc-card-icon-lg {
  width: 84px; height: 84px;
  border-radius: 20px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand-c, #E03E54) 12%, #ffffff) 0%, color-mix(in srgb, var(--brand-c, #E03E54) 4%, #ffffff) 100%);
  display: flex; align-items: center; justify-content: center;
  color: var(--brand-c, #E03E54);
  flex-shrink: 0;
  box-shadow: inset 0 -3px 0 rgba(20, 50, 90, 0.04);
}
.svc-card-icon-lg svg { width: 42px; height: 42px; }
.svc-card-body { min-width: 0; }
.svc-card-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--brand-c, #E03E54);
  background: color-mix(in srgb, var(--brand-c, #E03E54) 10%, transparent);
  padding: 4px 11px;
  border-radius: 999px;
  margin-bottom: 10px;
  letter-spacing: .5px;
  text-transform: uppercase;
}
.svc-card--featured .svc-card-title {
  font-size: 24px;
  font-weight: 800;
  color: #0f2c5c;
  margin: 0 0 8px;
  letter-spacing: -0.3px;
}
.svc-card--featured .svc-card-desc {
  font-size: 14.5px;
  line-height: 1.75;
  color: #4a5874;
  margin: 0 0 14px;
  flex: 0;
}
.svc-card-tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.svc-card-tags li {
  font-size: 12px;
  font-weight: 600;
  color: #4a5470;
  background: #f1f4fb;
  padding: 5px 12px;
  border-radius: 999px;
  letter-spacing: .2px;
}
.svc-card-arrow {
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-c, #E03E54);
  color: #ffffff;
  border-radius: 50%;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: 0 6px 18px color-mix(in srgb, var(--brand-c, #E03E54) 30%, transparent);
  transition: transform .3s var(--ease, ease);
}
.svc-card--featured:hover .svc-card-arrow {
  transform: translateX(4px);
}
@media (max-width: 720px) {
  .svc-card--featured {
    grid-template-columns: auto 1fr;
    gap: 20px;
    padding: 24px 22px;
  }
  .svc-card-arrow { display: none; }
  .svc-card-icon-lg { width: 64px; height: 64px; border-radius: 16px; }
  .svc-card-icon-lg svg { width: 32px; height: 32px; }
  .svc-card--featured .svc-card-title { font-size: 20px; }
}
.svc-card {
  position: relative;
  background: #ffffff;
  border: 1px solid #e5edf6;
  border-radius: 18px;
  padding: 30px 30px 28px;
  box-shadow: 0 8px 28px -12px rgba(20, 50, 90, 0.10), 0 2px 6px -2px rgba(20, 50, 90, 0.06);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.svc-card:hover {
  transform: translateY(-4px);
  border-color: #d3e2f4;
  box-shadow: 0 18px 48px -14px rgba(20, 50, 90, 0.18), 0 4px 10px -2px rgba(20, 50, 90, 0.08);
}
.svc-card-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, #f4f6fa 0%, #e9edf3 100%);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  box-shadow: inset 0 -3px 0 rgba(20, 50, 90, 0.06);
}
.svc-card-initial {
  font-size: 26px;
  font-weight: 900;
  letter-spacing: -0.5px;
  line-height: 1;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
.svc-card-icon svg { width: 30px; height: 30px; }
.svc-card-title {
  font-size: 19px;
  font-weight: 800;
  color: #0f2c5c;
  margin: 0 0 10px;
  letter-spacing: -0.2px;
}
.svc-card-desc {
  font-size: 14px;
  line-height: 1.85;
  color: #4a5874;
  margin: 0 0 22px;
  flex: 1;
}
.svc-card-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 18px;
  border-radius: 999px;
  background: #ffffff;
  border: 1.5px solid var(--brand-c, #E03E54);
  color: var(--brand-c, #E03E54);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: all .22s ease;
}
.svc-card-btn:hover {
  background: var(--brand-c, #E03E54);
  color: #ffffff;
  transform: translateX(2px);
  box-shadow: 0 6px 18px color-mix(in srgb, var(--brand-c, #E03E54) 32%, transparent);
}
.svc-card-btn-disabled {
  border-style: dashed;
  cursor: default;
  opacity: 0.85;
}
.svc-card-btn-disabled:hover {
  background: #ffffff;
  color: var(--brand-c, #E03E54);
  transform: none;
  box-shadow: none;
}
@media (max-width: 980px) {
  .svc-card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .svc-card-grid { grid-template-columns: 1fr; gap: 16px; }
  .svc-card { padding: 24px 22px 22px; }
  .svc-card-title { font-size: 17px; }
}

/* 主营业务页大板块头部：tag + 大标题 + 描述（居中，统一轻量样式） */
section.svc-big-section:not(.hero-carousel) { padding: 60px 0 24px; }
section.svc-big-section:first-of-type { padding-top: 40px; }
.svc-big-head { text-align: center; max-width: 880px; margin: 0 auto 30px; }
.svc-big-tag {
  display: inline-block;
  padding: 7px 22px;
  border-radius: 999px;
  background: linear-gradient(135deg, #FF5A6E 0%, #E03E54 100%);
  color: #ffffff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 22px;
  box-shadow: 0 8px 22px rgba(224, 62, 84, 0.32), 0 2px 6px rgba(224, 62, 84, 0.18);
}
.svc-big-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: #0f2c5c;
  margin: 0 0 16px;
  letter-spacing: -0.5px;
  line-height: 1.25;
}
.svc-big-desc {
  font-size: 15.5px;
  line-height: 1.9;
  color: #4a5874;
  margin: 0;
}
/* 板块描述末尾的「了解详情」外链（小号文字链接） */
.svc-big-link {
  display: inline;
  margin-left: 5px;
  font-size: 13px;
  font-weight: 600;
  color: #E03E54;
  text-decoration: none;
  border-bottom: 1px solid rgba(224, 62, 84, .42);
  transition: color .2s var(--ease, ease), border-color .2s var(--ease, ease);
}
.svc-big-link:hover {
  color: #c22c42;
  border-color: #c22c42;
}
/* 板块描述下方的品牌 logo（如青花词元·模型市场） */
.svc-brand-logo {
  display: block;
  width: 400px;
  max-width: 80%;
  height: auto;
  margin: 26px auto 0;
}
@media (max-width: 720px) {
  section.svc-big-section:not(.hero-carousel) { padding: 36px 0 16px; }
  .svc-big-title { font-size: 24px; }
  .svc-brand-logo { width: 320px; margin-top: 20px; }
}

@media (max-width: 768px) {
  .ad-center-icon { width: 200px; height: 200px; }
  .ad-icon-illo { width: 140px; height: 140px; }
  .bp-nav-inner { gap: 6px 8px; }
  .bp-nav-inner a { padding: 6px 10px; font-size: 12px; }
}

/* 品牌 logo 视觉区（外围生态图已移除，logo 直接放在背景上，无边框） */
.ad-block-visual { position: relative; display: flex; align-items: center; justify-content: center; min-height: 200px; max-width: 420px; margin: 0 auto; padding: 20px; }
.ad-block-visual-empty { min-height: 200px; }
.ad-center-logo { position: relative; display: flex; align-items: center; justify-content: center; max-width: 100%; }
.ad-center-logo img { width: auto; height: auto; max-width: 100%; max-height: 140px; object-fit: contain; display: block; }

/* 电商板块图标（替代品牌 logo，品牌色描边，居中放在背景上，无边框） */
.eb-icon { position: relative; display: flex; align-items: center; justify-content: center; color: var(--brand-c, #E03E54); }
.eb-icon svg { width: 92px; height: 92px; }

/* 电商板块扁平插画（SVG 文件，整体显示无边框） */
.eb-illo { position: relative; display: flex; align-items: center; justify-content: center; max-width: 300px; }
.eb-illo img, .eb-illo svg { width: 300px; height: 225px; display: block; }

/* 电商板块截图（如公众号预览）—— 模拟手机外观，居中放置 */
.ad-block-visual-shot { position: relative; max-width: 280px; padding: 0 !important; min-height: 360px !important; }
.eb-shot { position: relative; display: flex; align-items: center; justify-content: center; width: 100%; aspect-ratio: 270 / 321; border-radius: 24px; background: #fff; box-shadow: 0 18px 56px rgba(15,44,92,.18), 0 4px 12px rgba(15,44,92,.08); padding: 8px; box-sizing: border-box; }
.eb-shot img { width: 100%; height: 100%; object-fit: cover; border-radius: 18px; display: block; }

@media (max-width: 920px) {
  .ad-block { padding: 60px 0; }
  .ad-block-inner { grid-template-columns: 1fr !important; gap: 40px; }
  .ad-block-title { font-size: 28px; }
  .ad-block-visual { max-width: 380px; min-height: 180px; }
  .ad-center-logo img { max-height: 112px; }
  .ad-block-visual-shot { max-width: 240px; min-height: 320px !important; }
}
@media (max-width: 600px) {
  .ad-block-title { font-size: 24px; padding-left: 12px; }
  .ad-block-visual { min-height: 160px; padding: 12px; }
  .ad-center-logo img { max-height: 90px; }
.eb-icon svg { width: 64px; height: 64px; }
.eb-illo img, .eb-illo svg { width: 232px; height: 174px; }
.ad-block:has(.ad-block-visual-big) .container { max-width: 1320px; }
.ad-block:has(.ad-block-visual-big) .ad-block-inner { grid-template-columns: 1.25fr 1fr; gap: 64px; }
.ad-block:has(.ad-block-visual-big):nth-child(even) .ad-block-inner { grid-template-columns: 1fr 1.25fr; }
.ad-block-visual-big { max-width: 680px; min-height: 520px; padding: 20px; }
.ad-block-visual-big .eb-illo, .ad-block-visual-big .ai-brand-illo { max-width: 640px; }
.ad-block-visual-big .eb-illo img, .ad-block-visual-big .eb-illo svg,
.ad-block-visual-big .ai-brand-illo img, .ad-block-visual-big .ai-brand-illo svg { width: 640px; height: 480px; }
.ad-block-visual-shot { max-width: 200px; min-height: 280px !important; }
}
.bp-table table { width: 100%; border-collapse: collapse; }
.bp-table th { background: var(--navy); color: #fff; font-size: 13px; font-weight: 700; letter-spacing: 1px; padding: 14px 18px; text-align: left; }
.bp-table td { padding: 16px 18px; font-size: 14.5px; color: var(--ink-2); border-top: 1px solid var(--line); }
.bp-table tbody tr:hover { background: rgba(238,43,71,.04); }
.bp-table td:first-child { font-weight: 700; color: var(--navy); }

.sec-sub { margin: 18px auto 0; color: var(--muted); font-size: 15px; line-height: 1.75; max-width: 720px; }
.pc-card {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 28px;
  transition: all .4s var(--ease); position: relative; overflow: hidden;
  display: flex; flex-direction: column; height: 100%; box-sizing: border-box;
}
.pc-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); background: #fff; border-color: var(--brand-cyan); }
.pc-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.pc-icon {
  width: 48px; height: 48px; border-radius: 13px; background: var(--grad-brand);
  display: flex; align-items: center; justify-content: center; box-shadow: 0 9px 20px rgba(238,43,71,.18); flex-shrink: 0;
}
.pc-icon svg { width: 24px; height: 24px; }
.pc-card h3 { font-size: 19px; color: var(--navy); margin: 0; font-weight: 800; }
.pc-card p { color: var(--muted); font-size: 15px; margin-bottom: 18px; line-height: 1.7; flex-grow: 1; }
.pc-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: auto; }
.pc-links a {
  font-size: 13.5px; padding: 8px 16px; border-radius: 999px; background: #fff;
  color: var(--ink-2); transition: all .25s; border: 1px solid var(--line);
}
.pc-links a:hover { background: var(--grad-brand); color: #fff; border-color: transparent; transform: translateY(-2px); }

/* ---------------- 服务卡 ---------------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.svc-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 38px 32px;
  transition: all .4s var(--ease); position: relative; display: flex; flex-direction: column;
}
.svc-card:hover { transform: translateY(-8px); box-shadow: var(--sh-lg); }
.svc-icon {
  width: 62px; height: 62px; border-radius: 18px; background: var(--grad-brand);
  display: flex; align-items: center; justify-content: center; margin-bottom: 22px; box-shadow: var(--sh-red);
}
.svc-icon.cyan { background: var(--grad-cyan); box-shadow: var(--sh-cyan); }
.svc-icon.navy { background: var(--grad-navy); box-shadow: var(--sh-md); }
.svc-card h3 { font-size: 20px; color: var(--navy); margin-bottom: 10px; }
.svc-card .price {
  display: inline-block; align-self: flex-start; font-size: 12px; font-weight: 600; color: var(--brand-red);
  background: #fff0f2; padding: 4px 12px; border-radius: 999px; margin-bottom: 14px;
}
.svc-card p { color: var(--muted); font-size: 15px; margin-bottom: 8px; }
.svc-head { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.svc-head .svc-icon { width: 52px; height: 52px; border-radius: 14px; margin-bottom: 0; flex-shrink: 0; }
.svc-head .svc-icon svg { width: 26px; height: 26px; }
.svc-head h3 { font-size: 19px; margin-bottom: 0; line-height: 1.35; }

/* ---------------- 详情内容（子页面） ---------------- */
.detail-content { max-width: 820px; margin: 0 auto; }
.detail-content h3 { font-size: var(--fs-h3); color: var(--navy); margin: 42px 0 16px; position: relative; padding-left: 18px; }
.detail-content h3::before {
  content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 5px; border-radius: 3px; background: var(--grad-brand);
}
.detail-content p { color: var(--ink-2); font-size: 16px; margin-bottom: 16px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 12px 0 8px; }
.feature-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.feature-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.feature-box {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--r);
  padding: 22px 24px; transition: all .3s var(--ease);
}
.feature-box { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; padding: 26px 24px; height: 100%; box-sizing: border-box; }
.feature-head { display: flex; align-items: center; gap: 12px; width: 100%; }
.feature-icon { width: 48px; height: 48px; border-radius: 13px; background: var(--grad-brand); color: #fff; display: flex; align-items: center; justify-content: center; flex-shrink: 0; box-shadow: 0 9px 20px rgba(238,43,71,.18); }
.feature-icon svg { width: 24px; height: 24px; }
.feature-box:hover { background: #fff; box-shadow: var(--sh-md); transform: translateY(-3px); border-color: var(--brand-cyan); }
.feature-box h4 { color: var(--navy); font-size: 17.5px; margin: 0; font-weight: 800; }
.feature-box p { font-size: 14.5px; color: var(--muted); margin: 0; line-height: 1.75; }

.detail-illustration { margin: 30px 0 10px; text-align: center; }
.detail-illustration svg { max-width: 520px; width: 100%; height: auto; }

.detail-content ul { margin: 8px 0 12px; }
.detail-content ul li { position: relative; padding-left: 30px; margin-bottom: 12px; color: var(--ink-2); font-size: 15.5px; }
.detail-content ul li::before {
  content: ""; position: absolute; left: 4px; top: 9px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--grad-cyan); box-shadow: 0 0 0 4px rgba(25,198,227,.16);
}
.bullet-list { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 18px 0 0; }
.bullet-list li { position: static; display: flex; gap: 14px; align-items: flex-start; background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 18px 20px; margin: 0; box-shadow: var(--sh-sm); }
.bullet-list li::before { display: none; }
.bullet-icon { width: 36px; height: 36px; border-radius: 10px; background: rgba(25,198,227,.10); color: var(--brand-cyan); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.bullet-icon svg { width: 20px; height: 20px; }

.detail-image { margin: 28px 0 8px; border-radius: var(--r); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--sh-md); background: #fff; }
.detail-image img { width: 100%; height: auto; display: block; }

/* ---------------- 时间轴 ---------------- */
.timeline { position: relative; max-width: 860px; margin: 0 auto; padding-left: 4px; }
.timeline::before { content: ""; position: absolute; left: 13px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--brand-red), var(--brand-cyan)); }
.timeline-item { position: relative; padding: 0 0 30px 44px; }
.timeline-item::before {
  content: ""; position: absolute; left: 2px; top: 4px; width: 16px; height: 16px; border-radius: 50%;
  box-sizing: border-box; background: #fff; border: 4px solid var(--brand-red); box-shadow: 0 0 0 4px rgba(238,43,71,.14);
}
.timeline-item h4 { font-size: 17px; color: var(--navy); margin-bottom: 4px; }
.timeline-item p { color: var(--muted); font-size: 15px; }

/* ---------------- 公司简介（总体概要 · 大数字卡片） ---------------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  max-width: 920px;
  margin: 0 auto;
}
.stat-card {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  padding: 28px 28px 26px;
  background: #ffffff;
  border: 1px solid #eef0f4;
  box-shadow: 0 6px 22px rgba(15, 23, 42, .05);
  transition: transform .3s cubic-bezier(.2,.7,.3,1), box-shadow .3s ease, border-color .3s ease;
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(185, 28, 28, .12);
  border-color: rgba(224,62,84,.28);
}
.stat-card::before {
  content: "";
  position: absolute; left: 0; top: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, #1A4377 0%, #2F6BB3 35%, #19C6E3 100%);
  opacity: .85;
  transition: background .3s ease;
}
.stat-card:hover::before {
  background: linear-gradient(90deg, #E03E54 0%, #FF5A6E 35%, #19C6E3 100%);
}
.stat-icon {
  width: 46px; height: 46px; border-radius: 13px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(26,67,119,.14) 0%, rgba(47,107,179,.10) 60%, rgba(25,198,227,.10) 100%);
  color: #1A4377;
  margin-bottom: 18px;
  box-shadow: inset 0 0 0 1px rgba(26,67,119,.18), 0 4px 10px rgba(26,67,119,.08);
  transition: transform .3s ease, box-shadow .3s ease;
}
.stat-card:hover .stat-icon { transform: rotate(-6deg) scale(1.06); box-shadow: inset 0 0 0 1px rgba(224,62,84,.30), 0 6px 16px rgba(224,62,84,.18); }
.stat-icon svg { width: 23px; height: 23px; }
.stat-num {
  font-size: 44px; font-weight: 800;
  line-height: 1.05; letter-spacing: -1px;
  font-family: "Inter", "DIN Alternate", "Noto Sans SC", sans-serif;
  background: linear-gradient(135deg, #16395F 0%, #1A4377 55%, #2F6BB3 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 2px 22px rgba(26, 67, 119, .18);
  display: inline-flex; align-items: baseline;
}
.stat-num .unit { font-size: 14px; font-weight: 700; color: #8a93a8; margin-left: 6px; letter-spacing: 0; -webkit-text-fill-color: #8a93a8; background: none; text-shadow: none; font-family: inherit; }
.stat-name { margin-top: 12px; font-size: 16px; font-weight: 700; color: #0e1d3a; letter-spacing: .3px; }
.stat-desc { margin-top: 10px; font-size: 13px; color: #5b6577; line-height: 1.75; }
.stat-desc.mini { display: flex; flex-wrap: wrap; gap: 4px 18px; }
.stat-desc.mini span { white-space: nowrap; }
.stat-desc.mini b { color: #1A4377; font-weight: 700; font-size: 14.5px; margin-right: 2px; font-family: "Inter", "DIN Alternate", sans-serif; }
@media (max-width: 860px) { .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; } .stat-num { font-size: 38px; } }
@media (max-width: 520px)  { .stat-grid { grid-template-columns: 1fr; } .stat-num { font-size: 44px; } }



/* 首页资讯时间轴 */
.news-timeline { max-width: 880px; margin: 0 auto; position: relative; }
.news-timeline::before { content: ""; position: absolute; left: 64px; top: 8px; bottom: 8px; width: 2px; background: rgba(255,255,255,.16); }
.news-item { display: grid; grid-template-columns: 80px 1fr; gap: 26px; padding: 0 0 30px 0; position: relative; }
.news-item .year {
  font-size: 22px; font-weight: 800; color: var(--brand-cyan-2); text-align: right; line-height: 1.1;
  position: relative;
}
.news-item .year span { display: block; font-size: 11px; font-weight: 500; color: rgba(255,255,255,.55); margin-top: 4px; letter-spacing: 1px; }
.news-item > div:last-child { position: relative; padding-left: 30px; }
.news-item > div:last-child::before {
  content: ""; position: absolute; left: -3px; top: 7px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--grad-brand); box-shadow: 0 0 0 5px rgba(238,43,71,.18);
}
.news-item h4 { font-size: 17.5px; color: #fff; margin-bottom: 6px; }
.news-item p { color: rgba(255,255,255,.7); font-size: 15px; }

/* ---------------- 最新资讯（卡片切换版） ---------------- */
section.news-page { background: #eef2f8; padding: 80px 0 6px; }
.news-page .sec-head { margin-bottom: 44px; }
.news-page .sec-head h2 { color: var(--navy); }
.news-page .sec-head p { color: var(--muted); }

.news-featured { background: #fff; border: 1px solid rgba(15,30,60,.06); border-radius: 22px; overflow: hidden; box-shadow: 0 28px 70px rgba(15,30,60,.14); margin-top: 74px; margin-bottom: 28px; }
.news-featured-panel { display: none; grid-template-columns: 0.78fr 1.22fr; min-height: 320px; }
.news-featured-panel.active { display: grid; }
.nf-visual { background: #fff; border-right: 1px solid var(--line); display: flex; align-items: center; justify-content: center; padding: 44px; }
.nf-logos { display: flex; align-items: center; justify-content: center; gap: 24px; width: 100%; height: 100%; }
.nf-logos img { max-width: 46%; max-height: 150px; width: auto; height: auto; object-fit: contain; filter: drop-shadow(0 6px 14px rgba(15,30,60,.10)); }
.nf-logos img.extra-logo { max-width: 36%; max-height: 105px; }
.nf-logos img[alt="新华社"] { max-width: 62%; max-height: 190px; }
.nf-logos img[alt="腾讯广告"] { max-width: 36%; max-height: 105px; }
.nf-divider { width: 1px; height: 55%; background: var(--line); flex-shrink: 0; }
.nf-content { padding: 48px 52px; display: flex; flex-direction: column; justify-content: center; }
.nf-cat { align-self: flex-start; font-size: 11px; font-weight: 700; color: #fff; background: #1A4377; padding: 5px 12px; border-radius: 999px; margin-bottom: 18px; text-align: center; line-height: 1; }
.nf-content h3 { font-size: 28px; color: var(--navy); line-height: 1.35; margin-bottom: 16px; font-weight: 800; }
.nf-content p { font-size: 16px; color: #56627a; line-height: 1.85; }
.nf-date { margin-top: 22px; font-size: 13px; color: #aab4c6; font-family: "Inter", sans-serif; letter-spacing: .5px; }

.news-thumbs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.news-note {
  text-align: right;
  margin: 44px 0 0;
  font-size: 12px;
  color: #8a94a6;
  letter-spacing: .5px;
}
.news-thumb { background: #fff; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; cursor: pointer; transition: all .3s var(--ease); opacity: .82; }
.news-thumb:hover { transform: none; box-shadow: none; border-color: var(--line); opacity: 1; }
.news-thumb.active { border-color: var(--brand-red); box-shadow: 0 10px 26px rgba(238,43,71,.14); opacity: 1; }
.nf-year, .nt-year { font-style: normal; font-weight: 700; margin: 0; color: #fff; font-family: "Inter", sans-serif; letter-spacing: .5px; }
.nt-visual { height: 104px; display: flex; align-items: center; justify-content: center; background: #fff; border-bottom: 1px solid var(--line); padding: 18px; }
.nt-logos { display: flex; align-items: center; justify-content: center; gap: 14px; width: 100%; height: 100%; }
.nt-logos img { max-width: 46%; max-height: 55px; width: auto; height: auto; object-fit: contain; filter: drop-shadow(0 4px 9px rgba(15,30,60,.08)); }
.nt-logos img.extra-logo { max-width: 36%; max-height: 40px; }
.nt-logos img[alt="腾讯广告"] { max-width: 36%; max-height: 40px; }
/* 单 logo 卡片（仅主图、无 extra）：主图放大 */
.nt-logos.news-logos--single img { max-width: 60%; max-height: 64px; }
.nf-logos.news-logos--single img { max-width: 50%; max-height: 160px; }
/* 新华社单 logo 放大（公司动态页 featured 大卡） */
.nf-logos.news-logos--single img[alt="新华社"] { max-width: 72%; max-height: 230px; }
.nt-divider { width: 1px; height: 50%; background: var(--line); flex-shrink: 0; }
.nt-content { padding: 18px 20px 20px; }
.nt-cat { display: inline-block; font-size: 10px; font-weight: 700; color: #fff; background: #1A4377; padding: 3px 9px; border-radius: 999px; letter-spacing: .5px; margin-bottom: 9px; text-align: center; line-height: 1; }
.nt-content h4 { font-size: 15.5px; color: var(--navy); line-height: 1.5; font-weight: 700; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.nt-date { margin-top: 10px; font-size: 12px; color: #aab4c6; font-family: "Inter", sans-serif; display: block; }

/* ---------------- 媒体资源 ---------------- */
.media-wrap { display: grid; grid-template-columns: 1fr; gap: 52px; justify-items: center; }
.media-text { max-width: 860px; text-align: center; }
.media-text h3 { font-size: 22px; color: #fff; margin-bottom: 16px; }
.media-text p { color: rgba(255,255,255,.72); font-size: 15.5px; }
.platform-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; justify-content: center; }
.pf-chip {
  font-size: 13px; padding: 8px 15px; border-radius: 999px; background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.16); color: rgba(255,255,255,.9);
}
.fan-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.fan-card { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); border-radius: var(--r); padding: 22px; transition: all .3s var(--ease); }
.fan-card:hover { background: rgba(255,255,255,.12); transform: translateY(-4px); }
.fan-card .f-num { font-size: 30px; font-weight: 800; color: #fff; font-family: "Inter", sans-serif; letter-spacing: -.5px; }
.fan-card .f-label { font-size: 13.5px; color: rgba(255,255,255,.66); margin-top: 4px; }

.logo-wall {
  width: 100%; max-width: 880px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: #e1e4ea;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0,0,0,.14);
}
.logo-item {
  background: #fff;
  height: 124px;
  display: flex; align-items: center; justify-content: center;
  padding: 14px 14px;
  transition: all .35s var(--ease);
}
.logo-item:hover { background: #f4f6f9; transform: scale(1.03); }
.logo-item img { max-width: 100%; width: auto; object-fit: contain; }
.logo-item.tx { --h: 50px; }
.logo-item.focus { --h: 48px; }
.logo-item.xh { --h: 58px; }
.logo-item.xhs { --h: 62px; }
.logo-item.dy { --h: 62px; }
.logo-item img { max-height: var(--h); }

.daren-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.daren-card { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.13); border-radius: var(--r-lg); overflow: hidden; transition: all .4s var(--ease); }
.daren-card:hover { transform: translateY(-8px); box-shadow: var(--sh-lg); border-color: rgba(25,198,227,.5); }
.daren-card figure { overflow: hidden; background: rgba(255,255,255,.06); }
.daren-card figure img { width: 100%; height: auto; display: block; object-fit: initial; transition: transform .5s var(--ease); }
.daren-card:hover figure img { transform: scale(1.06); }
.d-info { padding: 18px 20px; }
.d-name { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.d-fans { font-size: 14px; color: rgba(255,255,255,.72); }
.d-num { font-size: 18px; font-weight: 800; color: var(--brand-cyan-2); font-family: "Inter", sans-serif; }

/* ---------------- 案例 ---------------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 30px; transition: transform .25s, box-shadow .25s; }
.case-card:hover { transform: translateY(-5px); box-shadow: var(--sh-md); }
.case-card .brand { font-size: 14px; color: var(--brand-red); font-weight: 600; margin-bottom: 6px; }
.case-card h3 { font-size: 20px; color: var(--navy); margin-bottom: 14px; }
.case-card .gmv { font-family: "Inter", sans-serif; font-size: 30px; font-weight: 700; color: var(--navy); }
.case-card .gmv span { font-size: 15px; color: var(--muted); font-family: var(--font); }
.case-card p.note { font-size: 14px; color: var(--muted); margin-top: 12px; }
.case-card .tag {
  display: inline-block; margin-top: 14px; font-size: 12px; font-weight: 600;
  background: #fdecea; color: var(--brand-red); padding: 4px 12px; border-radius: 100px;
}

.case-v2-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.case-v2 { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; transition: all .4s var(--ease); display: flex; flex-direction: column; }
.case-v2:hover { transform: translateY(-8px); box-shadow: var(--sh-lg); }
.case-v2 figure { position: relative; overflow: hidden; }
.case-v2 figure img { width: 100%; height: auto; display: block; object-fit: initial; transition: transform .6s var(--ease); }
.case-v2:hover figure img { transform: scale(1.07); }
.case-v2 .overlay {
  position: absolute; inset: 0; background: linear-gradient(to top, rgba(10,26,51,.86), transparent 62%);
  color: #fff; display: flex; flex-direction: column; justify-content: flex-end; padding: 22px;
}
.case-v2 .overlay .brand { font-size: 13px; color: var(--brand-cyan-2); font-weight: 600; }
.case-v2 .overlay .gmv { font-family: "Inter", sans-serif; font-size: 26px; font-weight: 800; }
.case-v2 .overlay .gmv span { font-size: 14px; font-weight: 500; }
.case-v2 .points { padding: 22px 24px 26px; }
.case-v2 .points li { position: relative; padding-left: 26px; margin-bottom: 11px; font-size: 14.5px; color: var(--ink-2); }
.case-v2 .points li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--brand-red); font-weight: 800; }

/* ---------------- 企业资质 ---------------- */
.qual-list { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-bottom: 44px; }
.qual-list span {
  font-size: 14px; padding: 9px 18px; border-radius: 999px; background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.16); color: rgba(255,255,255,.9);
}
.cert-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.cert-grid.cert-single { grid-template-columns: 1fr; max-width: 760px; margin: 0 auto; }
.cert-grid.cert-qual { display: flex; flex-wrap: wrap; justify-content: center; max-width: 900px; margin: 0 auto; }
.cert-grid.cert-qual .cert-card { width: calc((100% - 36px) / 3); }
.cert-card { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.13); border-radius: var(--r); overflow: hidden; transition: all .35s var(--ease); }
.cert-card:hover { transform: translateY(-6px); border-color: rgba(25,198,227,.5); }
.cert-card figure { overflow: hidden; background: #fff; display: flex; align-items: center; justify-content: center; height: 200px; padding: 12px; }
.cert-card figure img { max-width: 100%; max-height: 176px; width: auto; height: auto; object-fit: contain; display: block; }
.c-cap { padding: 14px 16px; }
.c-cap h4 { font-size: 14.5px; color: #fff; margin-bottom: 4px; }
.c-cap p { font-size: 12.5px; color: rgba(255,255,255,.62); }

.qual-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.qual-card { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); border-radius: var(--r-lg); padding: 34px 24px; text-align: center; transition: all .35s var(--ease); }
.qual-card:hover { background: rgba(255,255,255,.12); transform: translateY(-6px); }
.qual-card .q-num { font-size: 46px; font-weight: 800; color: #fff; font-family: "Inter", sans-serif; }
.qual-card .q-label { font-size: 15px; color: rgba(255,255,255,.8); margin-top: 6px; }

/* 知识产权卡片大数字占位（无 certs 图片时） */
.cert-fig-num { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; height: 200px; padding: 0; }
.cert-big-num { font-family: "Inter", sans-serif; font-size: 84px; font-weight: 800; color: #0F2C5C; line-height: 1; letter-spacing: -2px; }
.cert-mini { font-size: 13px; color: rgba(15,44,92,.55); letter-spacing: .5px; }

/* ---------------- AI 技术卡 ---------------- */
.tech-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.tech-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 34px 32px; transition: all .4s var(--ease); display: flex; flex-direction: column; align-items: flex-start; }
.tech-card:hover { transform: translateY(-8px); box-shadow: var(--sh-lg); border-color: var(--brand-cyan); }
.tech-card .ic { width: 56px; height: 56px; border-radius: 16px; background: rgba(25,198,227,.12); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.tech-card h3 { font-size: 20px; color: var(--navy); margin-bottom: 10px; }
.tech-card p { color: var(--muted); font-size: 15px; margin-bottom: 18px; }

/* ---------------- CTA ---------------- */
.cta {
  background: var(--grad-navy); border-radius: var(--r-xl); padding: 64px 48px; text-align: center;
  position: relative; overflow: hidden; color: #fff;
}
.cta::before { content: ""; position: absolute; right: -80px; bottom: -120px; width: 360px; height: 360px; background: radial-gradient(circle, rgba(25,198,227,.3), transparent 65%); }
.cta::after { content: ""; position: absolute; left: -60px; top: -90px; width: 300px; height: 300px; background: radial-gradient(circle, rgba(238,43,71,.25), transparent 65%); }
.cta h2 { font-size: var(--fs-h2); font-weight: 700; position: relative; z-index: 1; }
.cta p { color: rgba(255,255,255,.74); margin: 16px auto 30px; max-width: 560px; position: relative; z-index: 1; }
.cta .phone { font-family: "Inter", sans-serif; color: var(--brand-cyan-2); }

/* ---------------- 页脚 ---------------- */
footer { background: #06121f; color: rgba(255,255,255,.7); padding: 64px 0 28px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr auto; gap: 40px; }
.foot-qr { text-align: center; }
.foot-qr h4 { text-align: left; }
.foot-qr img { display: block; width: 108px; height: 108px; border-radius: 8px; background: #fff; padding: 5px; margin: 0 auto; }
.foot-qr p { margin-top: 10px; font-size: 13px; color: rgba(255,255,255,.55); }
footer h4 { color: #fff; font-size: 16px; margin-bottom: 16px; position: relative; padding-left: 16px; }
footer h4::before { content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 4px; border-radius: 3px; background: var(--grad-brand); }
footer p { font-size: 14.5px; line-height: 1.9; }
footer ul li { margin-bottom: 10px; }
footer ul li a { font-size: 14.5px; color: rgba(255,255,255,.7); transition: all .25s; }
footer ul li a:hover { color: var(--brand-cyan-2); padding-left: 4px; }
.foot-bottom { margin-top: 44px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.1); text-align: center; font-size: 13px; color: rgba(255,255,255,.45); }
.foot-note { margin-top: 12px; padding: 0 24px; max-width: 1100px; margin-left: auto; margin-right: auto; text-align: center; font-size: 12px; line-height: 1.75; color: rgba(255,255,255,.32); }

/* ---------------- 滚动揭示 ---------------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.show { opacity: 1; transform: none; }
.reveal:nth-child(2) { transition-delay: .08s; }
.reveal:nth-child(3) { transition-delay: .16s; }
.reveal:nth-child(4) { transition-delay: .24s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
  .ai-orbit, .ai-core, .ai-node, .ai-node::after, .hero-carousel::after { animation: none; }
}

/* ---------------- 原版首页：Hero内容 + 数据卡 ---------------- */
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 50px; align-items: center; width: 100%; position: relative; z-index: 2; }
.hero-arc { position: absolute; right: -40px; top: 10%; opacity: .35; pointer-events: none; z-index: 0; }
.hero-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.stat-box {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.16); border-radius: var(--r);
  padding: 24px 22px; transition: all .3s var(--ease); text-align: center;
}
.stat-box:hover { background: rgba(255,255,255,.12); transform: translateY(-4px); border-color: rgba(25,198,227,.4); }
.stat-box .num { font-size: 34px; font-weight: 800; color: #fff; font-family: "Inter", sans-serif; letter-spacing: -.5px; line-height: 1.1; }
.stat-box .num .unit { font-size: 15px; font-weight: 500; margin-left: 2px; }
.stat-box .label { font-size: 13px; color: rgba(255,255,255,.66); margin-top: 6px; }

.data-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.data-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 30px 24px; text-align: center;
  transition: all .3s var(--ease);
}
.data-card:hover { transform: translateY(-5px); box-shadow: var(--sh-md); border-color: var(--brand-cyan); }
.data-card .big { font-size: 36px; font-weight: 800; color: var(--navy); font-family: "Inter", sans-serif; letter-spacing: -.5px; }
.data-card .big span { font-size: 17px; color: var(--muted); }
.data-card .desc { font-size: 14px; color: var(--muted); margin-top: 6px; }

/* ---------------- AI 落地页：SVG logo + 品牌色文字 ---------------- */
.ai-brand { display: flex; flex-direction: column; align-items: center; gap: 18px; max-width: 220px; }
.ai-brand-illo { width: 200px; height: 200px; display: flex; align-items: center; justify-content: center; }
.ai-brand-illo svg { width: 200px; height: 200px; display: block; }
.ai-brand-label { font-size: 18px; font-weight: 700; letter-spacing: 0.5px; }
@media (max-width: 760px) {
  .ai-brand-illo, .ai-brand-illo svg { width: 150px; height: 150px; }
  .ai-brand-label { font-size: 15px; }
}

/* ---------------- AI 落地页统计条 ---------------- */
.ai-stats-band { background: linear-gradient(135deg, #0F2C5C 0%, #1488B8 100%); padding: 56px 0; color: #fff; margin-top: 16px; }
.ai-stats-band .ai-stats-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
.ai-stats-band .ai-stat { padding: 0 12px; }
.ai-stats-band .ai-stat b { display: block; font-size: 38px; font-weight: 800; letter-spacing: -0.5px; line-height: 1.1; font-family: "Inter", sans-serif; color: #19C6E3; }
.ai-stats-band .ai-stat span { display: block; font-size: 13px; color: rgba(255,255,255,.75); margin-top: 8px; }
@media (max-width: 760px) {
  .ai-stats-band .ai-stats-inner { grid-template-columns: repeat(2, 1fr); gap: 24px 12px; }
  .ai-stats-band .ai-stat b { font-size: 30px; }
}

/* ---------------- 板块章节小标题（数据 / 落地） ---------------- */
.ai-section-head {
  font-size: 14px; font-weight: 600; color: var(--muted);
  letter-spacing: 2px; text-transform: uppercase;
  padding-left: 18px; border-left: 4px solid var(--brand-c, #E03E54);
  margin: 0 0 22px;
}
.ai-section-head h2 { margin: 6px 0 0; color: var(--navy); font-size: 28px; font-weight: 800; letter-spacing: -0.3px; }

@media (max-width: 760px) {
  .ai-section-head h2 { font-size: 22px; }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
  .hero-ai-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-ai-visual { height: 320px; }
  .pc-grid, .svc-grid, .case-grid, .case-v2-grid, .daren-grid, .bp-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(3, 1fr); }
  .cert-grid.cert-single { grid-template-columns: 1fr; max-width: 760px; }
  .cert-grid.cert-qual { grid-template-columns: repeat(3, 1fr); max-width: 100%; }
  .cert-grid.cert-ip { grid-template-columns: repeat(3, 1fr); max-width: 100%; }
  .media-wrap { grid-template-columns: 1fr; }
  .qual-grid { grid-template-columns: repeat(2, 1fr); }
  .dropdown-menu.mega.cols-4 { grid-template-columns: repeat(2, 1fr); min-width: 480px; }
}
@media (max-width: 760px) {
  section:not(.hero-carousel) { padding: 70px 0; }
  .page-header { padding: 120px 0 64px; }
  .container { padding: 0 18px; }
  .nav-links { display: none; }
  .menu-btn { display: flex; }
  .mobile-menu, .mobile-mask { display: flex; }
  .nav-cta { display: flex; }
  .nav-cta .btn { height: 38px; padding: 0 16px; font-size: 13px; }
  .pc-grid, .svc-grid, .case-grid, .case-v2-grid, .daren-grid, .tech-grid, .feature-grid, .qual-grid, .data-grid, .bp-grid { grid-template-columns: 1fr; }
.bp-table { overflow-x: auto; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .stat-box .num { font-size: 28px; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid.cert-single { grid-template-columns: 1fr; max-width: 100%; }
  .cert-grid.cert-qual { grid-template-columns: 1fr; }
  .cert-grid.cert-qual .cert-card { width: 100%; }
  .cert-grid.cert-ip { grid-template-columns: 1fr; }
  .fan-grid { grid-template-columns: 1fr; }
  .logo-wall { grid-template-columns: repeat(3, 1fr); }
  .logo-item { height: 120px; padding: 18px; }
  .logo-item.tx { --h: 44px; }
  .logo-item.focus { --h: 42px; }
  .logo-item.xh { --h: 36px; }
  .logo-item.xhs { --h: 60px; }
  .logo-item.dy { --h: 60px; }
  .news-item { grid-template-columns: 60px 1fr; gap: 16px; }
  .news-timeline::before { left: 44px; }
  .news-featured-panel { grid-template-columns: 1fr; min-height: auto; }
  .nf-visual { min-height: 200px; border-right: none; border-bottom: 1px solid var(--line); }
  .nf-content { padding: 30px 26px; }
  .nf-content h3 { font-size: 22px; }
  .nf-content p { font-size: 15px; }
  .news-thumbs { grid-template-columns: repeat(2, 1fr); }
  .nt-content h4 { min-height: 44px; }
  .bullet-list { grid-template-columns: 1fr; }
  .detail-illustration svg { max-width: 100%; }
  .cta { padding: 44px 24px; }
  .foot-grid { grid-template-columns: 1fr; gap: 28px; }
  .carousel-slide { padding: 110px 0 90px; }
  .hero-carousel h1 { font-size: 38px; }

  /* 移动端 Hero 文字优化 */
  .hero-split { padding: 110px 0 70px; }
  .hero-mega { letter-spacing: -.5px; }
  .hero-keywords { grid-template-columns: 1fr; gap: 8px; margin-top: 22px; }
  .kw { padding: 11px 14px; font-size: 14px; }
  .hero-corner-text { right: 3%; bottom: 6%; z-index: 3; }
  .hero-corner-text .ct-line { font-size: clamp(26px, 8vw, 40px); }

  /* 主页 AI 服务矩阵两组分组小标题（移动端） */
  .home-section-head { font-size: 18px; margin: 0 0 -20px; }
  .home-section-arrow { font-size: 20px; }
}

/* 主页 AI 服务矩阵两组分组小标题（桌面端） */
.home-section-head { font-size: 22px; font-weight: 800; color: #E03E54; padding-left: 4px; line-height: 1.2; margin: 0 0 -28px; }
.home-section-arrow { font-weight: 400; font-size: 24px; margin-left: 6px; color: #E03E54; }
/* 让小标题下方的第一个 ad-block 顶部 padding 收窄，避免小标题与正文距离过大 */
.home-section-head + .ad-block { padding-top: 40px; }

/* ====== 合作伙伴 logo 展示墙 ====== */
/* 合作伙伴页底部历史业务免责小字（右对齐，页脚上方） */
.case-history-note {
  display: inline-block;
  margin: 0 0 6px;
  font-size: 12px;
  color: #8a94a6;
  letter-spacing: .5px;
  line-height: 1.6;
}
.partner-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 22px;
  max-width: 1200px;
  margin: 0 auto 32px;
  padding: 0 16px;
  justify-items: center;
}
/* 按板块自定义列数 */
.partner-grid.cols-5 { grid-template-columns: repeat(5, 1fr); }
.partner-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.partner-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 1024px) {
  .partner-grid.cols-5 { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 760px) {
  .partner-grid.cols-5,
  .partner-grid.cols-4,
  .partner-grid.cols-3 { grid-template-columns: repeat(3, 1fr); gap: 14px; }
}
@media (max-width: 480px) {
  .partner-grid.cols-5,
  .partner-grid.cols-4,
  .partner-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
}
.partner-cell {
  background: #ffffff;
  border-radius: 16px;
  border: 1px solid #eef0f4;
  height: 150px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px 20px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  box-shadow: 0 2px 8px rgba(15, 23, 42, .04);
  position: relative;
  overflow: hidden;
}
.partner-cell::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255,255,255,0) 0%, rgba(255,255,255,.6) 100%);
  opacity: 0;
  transition: opacity .25s ease;
  pointer-events: none;
}
.partner-cell:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgba(15, 23, 42, .12);
  border-color: #cbd5e1;
}
.partner-cell:hover::after { opacity: 1; }
.partner-cell img {
  max-width: 92%;
  max-height: 110px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(.05) saturate(.95);
  transition: filter .3s ease, transform .3s ease;
}
.partner-cell:hover img {
  filter: grayscale(0) saturate(1);
  transform: scale(1.06);
}
/* 重点 logo 放大：单元格高度不变，仅放大图片，避免行高错位 */
.partner-cell.lg { padding: 10px 14px; }
.partner-cell.lg img {
  max-width: 100%;
  max-height: 130px;
}
/* 指定 logo 缩小：仅缩小图片，单元格高度不变 */
.partner-cell.sm img {
  max-width: 70%;
  max-height: 74px;
}